Pt-Co cathode electrocatalyst behaviour viewed by in situ XAFS fuel cell measurements

被引：24

作者：

Witkowska, Agnieszka ^{[1
,3
]}

Dsoke, Sonia ^{[2
]}

Principi, Emiliano

Marassi, Roberto ^{[2
]}

Di Cicco, Andrea

Albertini, Valerio Rossi

机构：

[1] Gdansk Univ Technol, Dept Solid State Phys, PL-80952 Gdansk, Poland

[2] Univ Camerino, Dept Chem, I-62032 Camerino, Italy

[3] Univ Camerino, Dept Phys, CNR ISM Roma, INFM SOFT,CNISM, I-62032 Camerino, Italy

来源：

JOURNAL OF POWER SOURCES | 2008年 / 178卷 / 02期

关键词：

in situ X-ray absorption spectroscopy; fuel cell; Pt-Co catalyst;

D O I：

10.1016/j.jpowsour.2007.08.074

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper presents a preliminary structural investigation of the 20% Pt-Co (1:1) alloy on Vulcan XC-72 catalyst using X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). XAS results have been obtained ex situ and in situ using a specially optimized for XAS measurement fuel cell (down to 6 keV). The results are compared with those obtained for pure Pt catalyst on the same carbon support under the same working conditions. (C) 2007 Elsevier B.V. All rights reserved.

引用

收藏

页码：603 / 609

页数：7

相关论文

共 35 条

[1] Effects of geometric and electronic factors on ORR activity of carbon supported Pt-Co electrocatalysts in PEM fuel cells [J].

Antolini, E ;

Salgado, JRC ;

Giz, MJ ;

Gonzalez, ER .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2005, 30 (11) :1213-1220

[2] The stability of Pt-M (M = first row transition metal) alloy catalysts and its effect on the activity in low temperature fuel cells - A literature review and tests on a Pt-Co catalyst [J].

Antolini, Ermete ;

Salgado, Jose R. C. ;

Gonzalez, Ernesto R. .

JOURNAL OF POWER SOURCES, 2006, 160 (02) :957-968

[3] An XPS study on oxidation states of Pt and its alloys with Co and Cr and its relevance to electroreduction of oxygen [J].

Aricò, AS ;

Shukla, AK ;

Kim, H ;

Park, S ;

Min, M ;

Antonucci, V .

APPLIED SURFACE SCIENCE, 2001, 172 (1-2) :33-40

[4] Theoretical analysis of oxygen adsorption on Pt-based clusters alloyed with Co, Ni, or Cr embedded in a Pt matrix [J].

Balbuena, PB ;

Altomare, D ;

Agapito, L ;

Seminario, JM .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (49) :13671-13680

[5] X-ray-absorption spectroscopy and n-body distribution functions in condensed matter .2. Data analysis and applications [J].

Filipponi, A ;

DiCicco, A .

PHYSICAL REVIEW B, 1995, 52 (21) :15135-15149

[6] X-ray-absorption spectroscopy and n-body distribution functions in condensed matter .1. Theory [J].

Filipponi, A ;

DiCicco, A ;

Natoli, CR .

PHYSICAL REVIEW B, 1995, 52 (21) :15122-15134

[7] Structure of Pt-Co/Al2O3 and Pt-Co/NaY bimetallic catalysts:: characterization by in situ EXAFS, TPR, XPS and by activity in Co (carbon monoxide) hydrogenation [J].

Guczi, L ;

Bazin, D ;

Kovács, I ;

Borkó, L ;

Schay, Z ;

Lynch, J ;

Parent, P ;

Lafon, C ;

Stefler, G ;

Koppány, Z ;

Sajó, I .

TOPICS IN CATALYSIS, 2002, 20 (1-4) :129-139

[8] INSITU STUDIES OF A DISPERSED PLATINUM ON CARBON ELECTRODE USING X-RAY ABSORPTION-SPECTROSCOPY [J].

HERRON, ME ;

DOYLE, SE ;

PIZZINI, S ;

ROBERTS, KJ ;

ROBINSON, J ;

HARDS, G ;

WALSH, FC .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1992, 324 (1-2) :243-258

[9]

HILL EK, 1996, J PHYS CHEM-US, V100, P3102

[10] Carbon-supported Pt-Co alloy nanoparticles for oxygen reduction reaction [J].

Huang, Qinghong ;

Yang, Hui ;

Tang, Yawen ;

Lu, Tianhong ;

Akins, Daniel L. .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (08) :1220-1224

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